激光虚拟键盘的设计与实现  

Design and Implementation of the Laser Virtual Keyboard

作　　者：田全 王涵[1] 蔡睿妍 陶昊 Tian Quan;Wang Han;Cai Ruiyan;Tao Hao(School of Electronics and Information Engineering,Taizhou University,Taizhou 318000,China)

机构地区：[1]台州学院电子与信息工程学院,浙江台州318000

出　　处：《台州学院学报》2022年第6期6-12,共7页Journal of Taizhou University

基　　金：浙江省大学生科技创新活动计划(新苗人才计划)项目(2022R436A005)。

摘　　要：本文设计的激光虚拟键盘由图像采集模块、650 nm键盘投影模块、790 nm红外一字激光模块以及能提供3.3 V和5 V电压的电源模块组成。该激光虚拟键盘基于Visual Studio、OpenCV库函数以及MATLAB等工具进行设计,实现了可在任意平整表面投影出键盘,用于用户响应按键。测试结果表明:该虚拟键盘可以准确定位手指位置,实现按键的映射。相较于传统的机械键盘,其具有易携带、功耗低、敲击声音小、适用性广等特点。The laser virtual keyboard designed in this paper consists of an image acquisition module,a 650nm keyboard projection module,a 790 nm line laser module,and a power supply module providing 3.3 V or 5 V voltage.The laser virtual keyboard is designed based on tools such as Visual Studio,OpenCV library and MATLAB.The key‐board can be projected on any flat surface for users to respond to keys.The test results show that the keyboard can accurately locate the finger position and realize the mapping of keys.Compared with the traditional mechanical key‐board,the virtual keyboard is characterized by easy carrying,low power consumption,low knocking sound and wide applicability.

关 键 词：虚拟键盘 OPENCV 图像处理 

分 类 号：TP334.23[自动化与计算机技术—计算机系统结构] TP391.41[自动化与计算机技术—计算机科学与技术]